Re: [PATCH] ALSA: usb-audio: Skip sample-rate read-back on PreSonus AudioBox USB

[Takashi Iwai]

On Mon, 19 Oct 2026 22:49:44 +0200,
Thomas Nemer wrote:
> 
> The AudioBox USB stalls the UAC1 GET_CUR SAMPLING_FREQ request on both
> streaming endpoints. After the sample rate is set, the read-back
> verification in set_sample_rate_v1() fails and logs
> 
>   usb 1-3.1.2: 2:1: cannot get freq at ep 0x1
>   usb 1-3.1.2: 3:1: cannot get freq at ep 0x82
> 
> on each endpoint configuration until the sample_rate_read_error counter
> gives up. Set QUIRK_FLAG_GET_SAMPLE_RATE to skip the read-back on this
> device.
> 
> Fixes: 1869c47e5d59 ("ALSA: usb-audio: Fix missing sample-rate control for PreSonus AudioBox USB")
> 
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Thomas Nemer <thomas.nemer@xxxxxxxxxxx>

Applied now.  Thanks.


Takashi